Improvement in sewing-machines



'y UNITED STATES` ALLEN B. WILSON, OF WATEBTOWN, CONNECTICUT, ASSIGNORTO f PATENT OEETCE.l

' W. P. N. FITZGERALD.

, `IMPROVEMENT IN SEWING-MACHINES.

1 Specification forming part of Letters yPatent No. 12,116, datedDecember 19, 1854.

To all whom it may concern,.-

Beit known that I, ALLEN B. WrLsoN, of Watertown, in the county ofLitchfield and State of Connecticut, have invented certain new anduseful Improvements in Sewing-Machines; and'I do hereby declare that thefollowing is a full clear, and exact description of the same, referencebeing had to the accompanying drawings, 'forming part of thisspecication, in which- Figure I vis a side elevation of the machine; andFig. 2 is a transverse vertical section of thesame, taken through theparts which form the stitches, and represents the peculiar arrangementfor feeding the cloth along, in which said improvements consist.l

To enable those skilled in the art to make and use my invention, I willdescribe its construction and operation.

The working parts of the machine are all attached to or carried by asuitable framework, A A B B, which is secured firmly to a table orbench. The mandrel C, resembling in a certain degree the mandrel of alathe, is fitted in suitable bearings in the framework A A BB, and issuitably turned or provided with a pulley, D, to receive the rotarymotion, through a drivingband, from a driving-wheel moved by a treadleunder the table, or by any suitable means.r

The operative parts of this machine and its construction aresubstantially the same as those described in Letters Patent of theUnited States, bearing date the 15th day of June, A. D. 1852, granted toNathaniel Wheeler,'A. B. Wilson, Alamson Warren, and S. I?. Woodruff, ofWatertown aforesaid.

The material to be sewed is laid upon ay plate, Q, which is secured tothe standards `A A, and forms a small table. It is held down by a smallpressing-spring, which is at-.

tached to the end of an arm, B, which is secured to the back of theframe-work, and extends over the top of the machine.y In the front endof the pressing-spring f there is `a slot, g, cut to allow the needle topass through.

An opening corresponding to the slot gy, is cut through the plate Q forthe same purpose.

The arrangement for feeding the cloth along is shown in Fig. 2, andconsists of a feed-bar, S. It is a straight liat bar with a slotextending nearly itswhole length and with aprojecisa prominence. Thisprominenceextends also to the front. By the revolution of the mandrelthe prominence of the cam is made to act on the ,under side of thespring-bar k and force/upits teeth or notches in contact with the clothat the same time that its front part acts on the projection t' and movesthe feed-bar klongitudinally forward toward the plane of theI needlesmotion, carrying the cloth with it. 'Ihe movement of the feed-bar whileits points or notches are above the surface vof the plate Q and incontact with the cloth causesthe cloth to move forward the properdistance for a stitch at each ascent of the needle, the bar beingreturned by the pressure of the spring n, attached to the framework,against theprojection after the prominence m on the cam has passed, thenotches or teeth being freed from the cloth as soon as thelprominence ofthe cam is clear' of the spring-bar, by the Yforce of the spring portionof said bar.

What I claim as my invention, and desire to have secured secured to meby Letters Patent is- The device above described in asewing-machineforfeeding the cloth along, consisting of a bar furnished with points ornotches, having a vertical or up-and-down motion for fastening the clothupon and, releasing it from said bar by striking it against aplate orspring, and a lateral' motion ormotion forward and back for feeding thecloth along after each stitch, substantially as above set forth.

. ALLEN B. WILSON.

Vitnesses: f

HENRY BRoNsoN,

.FEEDL HUED,

